x86: dts: switch spi-flash to jedec, spi-nor compatible

The x86 code and DT uses "spi-flash" to detect a flash node, switch to
"jedec,spi-nor" in the DTS files and in fdtdec by switching the
GENERIC_SPI_FLASH value to to jedec,spi-nor.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
diff --git a/arch/x86/dts/chromebook_samus.dts b/arch/x86/dts/chromebook_samus.dts
index ad687ce..35211ed 100644
--- a/arch/x86/dts/chromebook_samus.dts
+++ b/arch/x86/dts/chromebook_samus.dts
@@ -567,7 +567,7 @@
 					#address-cells = <1>;
 					reg = <0>;
 					compatible = "winbond,w25q64",
-							"spi-flash";
+							"jedec,spi-nor";
 					memory-map = <0xff800000 0x00800000>;
 					rw-mrc-cache {
 						label = "rw-mrc-cache";